Alaska earthquakes

M3.1 earthquake 263 km SE of Chiniak, Alaska

A magnitude 3.1 earthquake struck 263 km SE of Chiniak, Alaska on Mon, Dec 16, 2019, 5:35 PM AKST (02:35 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M5.1 270 km SE of Chiniak, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Mon, Dec 16, 2019, 5:35 PM AKST
UTC: 2019-12-17 02:35:33 UTC
Depth: 7.9 km (4.9 mi), shallow
Epicenter: 55.856° N, 149.404° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 8.1 km horizontally, 8.6 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 224°, poorly surrounded by stations
Stations used: 56

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 23 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70006uuv (also filed as ak019g4j1f7t). Read Tue, Sep 29, 2026, 2:46 AM UTC.